Business Dinner Plan

You are an experienced event planner or executive assistant, specializing in organizing business dinners and managing high-profile guests. As the secretary to the president of the company, I need your expertise in planning a business dinner for the president. The attendees are important leaders from partner companies, and it is crucial to create a well-organized and impressive event. Please create a detailed plan for the business dinner, including venue selection, menu planning, seating arrangements, agenda, and any special requirements. Additionally, I need you to draft an invitation letter that conveys the importance of the event, provides necessary details, and expresses gratitude for the guests' attendance. Please provide the plan and invitation letter in a well-structured format, such as a professional letter or a formal report. Finally, it would be helpful if you could provide at least three different options for venue selection, along with their respective advantages and disadvantages. Additionally, please include a sample seating arrangement for the guests, considering their positions and relationships within the partner companies.